---
title: "ai.turn-request@1 · OpenVibe.Services"
canonical: "https://openvibe.services/docs/contracts/ai.turn-request"
updated: null
---

# ai.turn-request@1 · OpenVibe.Services

HTML: [ai.turn-request@1 · OpenVibe.Services](https://openvibe.services/docs/contracts/ai.turn-request)

# AiTurnRequest `ai.turn-request@1`

Generated at 2026-11-13 06:25:48 UTC from [`openvibe-contracts v0.419.0`](https://github.com/OpenVibers/OpenVibe.Contracts/tree/v0.419.0) and [`openvibe-sdk v0.161.0`](https://github.com/OpenVibers/OpenVibe.SDK/tree/v0.161.0).

- Version: 1.0.0
- Owner: ai
- Visibility: first-party
- Status: active
- Compatibility: backward
- Schema: [`https://openvibe.network/contracts/ai/turn-request.v1.json`](/docs/contracts/ai.turn-request.json)

ai.turn-request@1: one conversational turn. Files are Media references, never inline bytes.

## Fields

| Field | Type | Required | Description | Constraints |
| --- | --- | --- | --- | --- |
| `messages` | array of object | yes |  | - `minItems 1`<br>- `items: no other fields` |
| `messages[].role` | enum | yes |  | - `one of "user", "assistant"` |
| `messages[].content` | string | yes |  | - `maxLength 200000` |
| `messages[].files` | [ai.file](/docs/contracts/ai.file) |  |  |  |
| `files` | [ai.file](/docs/contracts/ai.file) |  | Files attached by the person for this turn. |  |

## Examples

From the contract's own test fixtures: valid ones validate, rejected ones must fail.

 Valid: attached-file

~~~~
{
  "messages": [
    {
      "role": "user",
      "content": "Summarize this",
      "files": [
        {
          "id": "med_file_01",
          "name": "notes.txt",
          "media_type": "text/plain",
          "size": 12,
          "storage": {
            "provider": "media",
            "key": "files/usr_01/med_file_01"
          },
          "access": {
            "readers": [
              "usr_01"
            ]
          },
          "read": {
            "method": "text",
            "content": "hello world"
          },
          "role": "input"
        }
      ]
    }
  ],
  "files": []
}
~~~~

Rejected: missing-messages

~~~~
{
  "files": []
}
~~~~

## Validate

~~~~
const contracts = require('openvibe-contracts');
contracts.validate('ai.turn-request@1', value);   // { valid, errors: [{ path, message }] }
~~~~